/*
 * Copyright 2009 Cedric Priscal
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 */

package android.serial;

import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import android.util.Log;

public class SerialPort {

	private static final String LOG_TAG = "SerialPort";

	/*
	 * Do not remove or rename the field mFd: it is used by native method close();
	 */
	private FileDescriptor mFd;
	private FileInputStream mFileInputStream;
	private FileOutputStream mFileOutputStream;

	public SerialPort(File device, int baudrate)
	{
		
		Log.e(LOG_TAG, "SerialPort function");
		/* Check access permission */
		if (!device.canRead() || !device.canWrite()) {
			Log.d(LOG_TAG, "device" + device.getPath() + "can not read or write");
		}
		
		///mFd = null;
		mFd = (FileDescriptor)open(device.getAbsolutePath(), baudrate);
		if (mFd == null) {
			Log.e(LOG_TAG, "native open returns null");
		}
		mFileInputStream = new FileInputStream(mFd);
		mFileOutputStream = new FileOutputStream(mFd);
	}

	// Getters and setters
	public InputStream getInputStream() {
		return mFileInputStream;
	}

	public OutputStream getOutputStream() {
		return mFileOutputStream;
	}
	public int close()
	{
		Close();
		return 0;
	}
	// JNI
	//private native static FileDescriptor open(String path, int baudrate);
	private native static Object open(String path, int baudrate);
	private native static int Close();
	static {
			Log.i(LOG_TAG,"Load Native Service LIB");
			System.loadLibrary("serial_port");
			Log.i(LOG_TAG,"Load Native Service LIB ok............");
	}
}
